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We added the #MISP Project 'zeek' type for 
@Zeekurity to actively share NIDS rules for the NIDS formerly known as Bro. The Bro and Zeek type will coexist.
https://github.com/MISP/MISP/commit/e65c2a536c9b37f232ef9edb47323eae50f2a5ca
MISP core standard format and docs are also updated.
Long live #OpenSource